html {
  font-size: 20px;
}
/*以375px屏幕20px为1rem*/
/* @media only screen and (min-width: 320px) {
  html {
    font-size: 17.06666667px !important;
  }
}
@media only screen and (min-width: 360px) {
  html {
    font-size: 19.2px !important;
  }
}
@media only screen and (min-width: 375px) {
  html {
    font-size: 20px !important;
  }
}
@media only screen and (min-width: 400px) {
  html {
    font-size: 21.33333333px !important;
  }
}
@media only screen and (min-width: 414px) {
  html {
    font-size: 22.08px !important;
  }
}
@media only screen and (min-width: 480px) {
  html {
    font-size: 25.6px !important;
  }
}
 */
